Detect the production of acids from a carbohydrates contained in a culture medium with Thermo Scientific™ Remel™ Phenol Red Solution, a colorimetric indicator. Phenol Red changes color at a pH nearly optimal for most organisms (pH 6.8 to 8.4). It turns yellow under acidic conditions while it turns red under alkaline conditions.
Indicators are essential for preparing differential culture media. They detect and indicate changes in the acidity or alkalinity of a medium by changing color. They can also act as inhibitors of growth or bacteriostatic agents.Ready-to-use - Liquid reagentEasy to interpret –As indicator turns yellow under acidic conditions while it turns red under alkaline conditions.This indicator solution contains phenol red in ethyl alcohol and demineralized water.Not all products are available for sale in all territories. Please inquire.Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.
General References:
- Food and Drug Administration. 2000. Bacteriological Analytical Manual Online. AOAC International, Gaithersburg, MD.
- Lillie, R.D. 1969. H.J. Conn's Biological Stains. 8th Williams & Wilkins Co. Baltimore, MD. United States Pharmacopeia. 2011. 34-NF 29. United States, Pharmacopeial Convention, Rockville, MD.